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com.google.gwt.user.client.ui</FONT>
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Class WidgetCollection</H2>
<PRE>
java.lang.Object
  <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><B>com.google.gwt.user.client.ui.WidgetCollection</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.lang.Iterable&lt;<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&gt;</DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>WidgetCollection</B><DT>extends java.lang.Object<DT>implements java.lang.Iterable&lt;<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&gt;</DL>
</PRE>

<P>
A simple collection of widgets to be used by
 <A HREF="../../../../../../com/google/gwt/user/client/ui/Panel.html" title="class in com.google.gwt.user.client.ui"><CODE>panels</CODE></A> and
 <A HREF="../../../../../../com/google/gwt/user/client/ui/Composite.html" title="class in com.google.gwt.user.client.ui"><CODE>composites</CODE></A>.
 
 <p>
 The main purpose of this specialized collection is to implement
 <CODE>Iterator.remove()</CODE> in a way that delegates removal to its
 panel. This makes it much easier for the panel to implement an
 <A HREF="../../../../../../com/google/gwt/user/client/ui/HasWidgets.html#iterator()"><CODE>iterator</CODE></A> that
 supports removal of widgets.
 </p>
<P>

<P>
<HR>

<P>

<!-- ======== CONSTRUCTOR SUMMARY ======== -->

<A NAME="constructor_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Constructor Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#WidgetCollection(com.google.gwt.user.client.ui.HasWidgets)">WidgetCollection</A></B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/HasWidgets.html" title="interface in com.google.gwt.user.client.ui">HasWidgets</A>&nbsp;parent)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a new widget collection.</TD>
</TR>
</TABLE>
&nbsp;
<!-- ========== METHOD SUMMARY =========== -->

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<B>Method Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#add(com.google.gwt.user.client.ui.Widget)">add</A></B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adds a widget to the end of this collection.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#contains(com.google.gwt.user.client.ui.Widget)">contains</A></B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determines whether a given widget is contained in this collection.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#get(int)">get</A></B>(int&nbsp;index)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the widget at the given index.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#indexOf(com.google.gwt.user.client.ui.Widget)">indexOf</A></B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the index of the specified index.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#insert(com.google.gwt.user.client.ui.Widget, int)">insert</A></B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w,
       int&nbsp;beforeIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Inserts a widget before the specified index.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.util.Iterator&lt;<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#iterator()">iterator</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets an iterator on this widget collection.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#remove(int)">remove</A></B>(int&nbsp;index)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes the widget at the specified index.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#remove(com.google.gwt.user.client.ui.Widget)">remove</A></B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes the specified widget.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/google/gwt/user/client/ui/WidgetCollection.html#size()">size</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the number of widgets in this collection.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<B>Constructor Detail</B></FONT></TH>
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</TABLE>

<A NAME="WidgetCollection(com.google.gwt.user.client.ui.HasWidgets)"><!-- --></A><H3>
WidgetCollection</H3>
<PRE>
public <B>WidgetCollection</B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/HasWidgets.html" title="interface in com.google.gwt.user.client.ui">HasWidgets</A>&nbsp;parent)</PRE>
<DL>
<DD>Constructs a new widget collection.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>parent</CODE> - the container whose <A HREF="../../../../../../com/google/gwt/user/client/ui/HasWidgets.html#remove(com.google.gwt.user.client.ui.Widget)"><CODE>HasWidgets.remove(Widget)</CODE></A> will be
          delegated to by the iterator's <CODE>Iterator.remove()</CODE> method.</DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<A NAME="add(com.google.gwt.user.client.ui.Widget)"><!-- --></A><H3>
add</H3>
<PRE>
public void <B>add</B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w)</PRE>
<DL>
<DD>Adds a widget to the end of this collection.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>w</CODE> - the widget to be added</DL>
</DD>
</DL>
<HR>

<A NAME="contains(com.google.gwt.user.client.ui.Widget)"><!-- --></A><H3>
contains</H3>
<PRE>
public boolean <B>contains</B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w)</PRE>
<DL>
<DD>Determines whether a given widget is contained in this collection.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>w</CODE> - the widget to be searched for
<DT><B>Returns:</B><DD><code>true</code> if the widget is present</DL>
</DD>
</DL>
<HR>

<A NAME="get(int)"><!-- --></A><H3>
get</H3>
<PRE>
public <A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A> <B>get</B>(int&nbsp;index)</PRE>
<DL>
<DD>Gets the widget at the given index.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the index to be retrieved
<DT><B>Returns:</B><DD>the widget at the specified index
<DT><B>Throws:</B>
<DD><CODE>java.lang.IndexOutOfBoundsException</CODE> - if the index is out of range</DL>
</DD>
</DL>
<HR>

<A NAME="indexOf(com.google.gwt.user.client.ui.Widget)"><!-- --></A><H3>
indexOf</H3>
<PRE>
public int <B>indexOf</B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w)</PRE>
<DL>
<DD>Gets the index of the specified index.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>w</CODE> - the widget to be found
<DT><B>Returns:</B><DD>the index of the specified widget, or <code>-1</code> if it is
         not found</DL>
</DD>
</DL>
<HR>

<A NAME="insert(com.google.gwt.user.client.ui.Widget, int)"><!-- --></A><H3>
insert</H3>
<PRE>
public void <B>insert</B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w,
                   int&nbsp;beforeIndex)</PRE>
<DL>
<DD>Inserts a widget before the specified index.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>w</CODE> - the widget to be inserted<DD><CODE>beforeIndex</CODE> - the index before which the widget will be inserted
<DT><B>Throws:</B>
<DD><CODE>java.lang.IndexOutOfBoundsException</CODE> - if <code>beforeIndex</code> is out of
           range</DL>
</DD>
</DL>
<HR>

<A NAME="iterator()"><!-- --></A><H3>
iterator</H3>
<PRE>
public java.util.Iterator&lt;<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&gt; <B>iterator</B>()</PRE>
<DL>
<DD>Gets an iterator on this widget collection. This iterator is guaranteed to
 implement remove() in terms of its containing <A HREF="../../../../../../com/google/gwt/user/client/ui/HasWidgets.html" title="interface in com.google.gwt.user.client.ui"><CODE>HasWidgets</CODE></A>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>iterator</CODE> in interface <CODE>java.lang.Iterable&lt;<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>an iterator</DL>
</DD>
</DL>
<HR>

<A NAME="remove(int)"><!-- --></A><H3>
remove</H3>
<PRE>
public void <B>remove</B>(int&nbsp;index)</PRE>
<DL>
<DD>Removes the widget at the specified index.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the index of the widget to be removed
<DT><B>Throws:</B>
<DD><CODE>java.lang.IndexOutOfBoundsException</CODE> - if <code>index</code> is out of range</DL>
</DD>
</DL>
<HR>

<A NAME="remove(com.google.gwt.user.client.ui.Widget)"><!-- --></A><H3>
remove</H3>
<PRE>
public void <B>remove</B>(<A HREF="../../../../../../com/google/gwt/user/client/ui/Widget.html" title="class in com.google.gwt.user.client.ui">Widget</A>&nbsp;w)</PRE>
<DL>
<DD>Removes the specified widget.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>w</CODE> - the widget to be removed
<DT><B>Throws:</B>
<DD><CODE>java.util.NoSuchElementException</CODE> - if the widget is not present</DL>
</DD>
</DL>
<HR>

<A NAME="size()"><!-- --></A><H3>
size</H3>
<PRE>
public int <B>size</B>()</PRE>
<DL>
<DD>Gets the number of widgets in this collection.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the number of widgets</DL>
</DD>
</DL>
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